I agree. His family must be absolutely distraught. And he's only 59, too.
That means that there's not going to be much more Discworld. Sigh...
The words of Nero come to mind.
"By Jupiter, what an artist dies with me."

BTW, you beat me to it. I was going to do this.

A flap of the wings yesterday means big changes tomorrow.Let's work together to keep the present inevitable.

"Fifteen hundred years ago everybody knew the Earth was the center of the universe. Five hundred years ago, everybody knew the Earth was flat, and fifteen minutes ago, you knew that humans were alone on this planet. Imagine what you'll know tomorrow." - Kay, Men in Black